CVE-2026-3903: CWE-352 Cross-Site Request Forgery (CSRF) in modulards Modular DS: Monitor, update, and backup multiple websites
The Modular DS: Monitor, update, and backup multiple websites plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.5.1. This is due to missing nonce validation on the postConfirmOauth() function. This makes it possible for unauthenticated attackers to disconnect the plugin's OAuth/SSO connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
AI Analysis
Technical Summary
CVE-2026-3903 is a CSRF vulnerability in the Modular DS: Monitor, update, and backup multiple websites WordPress plugin, affecting all versions up to 2.5.1. The issue arises from the lack of nonce validation in the postConfirmOauth() function, enabling attackers to forge requests that disconnect the OAuth/SSO connection if a site administrator is tricked into executing the action. This vulnerability requires user interaction (UI:R) but no privileges (PR:N) and can be exploited remotely (AV:N).
Potential Impact
The vulnerability allows an attacker to cause limited integrity impact by disconnecting the plugin's OAuth/SSO connection without authentication. There is no direct confidentiality or availability impact. The attack requires tricking a site administrator into performing an action, such as clicking a crafted link.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators should exercise caution with unsolicited links and consider disabling or restricting the plugin's OAuth/SSO features if feasible. Monitor vendor channels for updates and apply patches promptly once available.
CVE-2026-3903: CWE-352 Cross-Site Request Forgery (CSRF) in modulards Modular DS: Monitor, update, and backup multiple websites
Description
The Modular DS: Monitor, update, and backup multiple websites plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.5.1. This is due to missing nonce validation on the postConfirmOauth() function. This makes it possible for unauthenticated attackers to disconnect the plugin's OAuth/SSO connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-3903 is a CSRF vulnerability in the Modular DS: Monitor, update, and backup multiple websites WordPress plugin, affecting all versions up to 2.5.1. The issue arises from the lack of nonce validation in the postConfirmOauth() function, enabling attackers to forge requests that disconnect the OAuth/SSO connection if a site administrator is tricked into executing the action. This vulnerability requires user interaction (UI:R) but no privileges (PR:N) and can be exploited remotely (AV:N).
Potential Impact
The vulnerability allows an attacker to cause limited integrity impact by disconnecting the plugin's OAuth/SSO connection without authentication. There is no direct confidentiality or availability impact. The attack requires tricking a site administrator into performing an action, such as clicking a crafted link.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators should exercise caution with unsolicited links and consider disabling or restricting the plugin's OAuth/SSO features if feasible. Monitor vendor channels for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-03-10T18:58:10.198Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b121032f860ef9435ba556
Added to database: 3/11/2026, 8:00:03 AM
Last enriched: 4/9/2026, 6:49:34 PM
Last updated: 4/24/2026, 10:08:07 AM
Views: 80
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